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应用Gao-Yong湍流模型模拟了吹气对翼型表面分离流控制的影响.结果表明,该模型不仅能够对翼型绕流的分离点、表面压力分布、升阻特性等做出较好预测,而且还能模拟出控制分离的吹气效果:①有效消除翼面分离涡;②“裹携”翼面来流进一步提高升力系数.提高吹气动量系数,升力曲线上移的幅度也相应增加;而吹气角度对吹气射流“裹携”作用的强弱也有一定的影响,当吹气方向相对于翼弦偏上时,吹气射流“裹携”来流与消除分离涡的作用增强,升力提升更为明显.
The Gao-Yong turbulence model was used to simulate the influence of blow air on the separation flow control of the airfoil.The results show that this model not only can predict the separation point, the surface pressure distribution and the lift-drag characteristic of the airfoil, But also to simulate the control of the separation of the blowing effect: ① effectively eliminate the vortex isolated vortex; ② “wrapped” airfoil flow to further improve the lift coefficient. Increasing the momentum coefficient of blowing air, the lift curve corresponding to the magnitude of the shift Increase; and blowing angle on the inflatable jet “wrapped ” the role of strength also has a certain impact, when the blowing direction relative to the chord upward, the inflatable jet “wrapped” to flow and eliminate The role of separation vortex enhancement, lifting more obvious.